# Derivative of a plot [closed]

I plotted a graph numerically, so I don't have a definition of the plotted function. Now I want to plot the derivative of this graph. Is there any way to do it in Mathematica? I have the following plot

## closed as off-topic by Dr. belisarius, Karsten 7., Öskå, Mark McClure, Yves KlettDec 19 '14 at 16:39

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• "This question arises due to a simple mistake such as a trivial syntax error, incorrect capitalization, spelling mistake, or other typographical error and is unlikely to help any future visitors, or else it is easily found in the documentation." – Dr. belisarius, Karsten 7., Öskå, Mark McClure
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• How did you generate the plot, from a list of points? – John McGee Dec 18 '14 at 17:34
• @ John McGee yes you can say from order pairs – Usman Dec 18 '14 at 17:39
• Have you seen Interpolation[]? – Dr. belisarius Dec 18 '14 at 17:42
• This tutorial should contain all informations you'll need. – Karsten 7. Dec 18 '14 at 17:43

p = Plot[Sin[x], {x, 0, 2 \[Pi]}];